Audiphone-transmitter stand and sounding-board.



0. B. WILLIAMS AUDIPHONE TRANSMITTER STAND AND SOUNDING BOARD. APPLICATION FILED .TA1I.14,1911.

1 ,125324. Patented Jan. 19, 1915.

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0. E. WILLIAMS. AUDIPHONE TRANSMITTER STAND AND: $OUNDING BOARD.

APPLIOATION FILED JAN.14,1911.

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SHARE. e3 WILLIAMS, CHICAiZZ-Q, LELINQES.

AUDIPHONE-TRANSMITTEB STAND AND SGUNDIlNG-BOARD.

Specification o"; .Zettexs Feteot.

Patented 32m, 5.3% i liifim Application filler! January 1%, 1911. Serial Nov 802,690.

"1'0 all whomit may 6071(1'67W" Be it known that 1., GHARLns E. NIL

moms, a citizen of the United States, lesid ing at the city of .Shicago, in the county oi 5 (7001: and State of Illinois, have invented a new and useful Improvement in Audiphone-Transmitter Stmfis and Sounding-- Boards, of which the following is a specification.

My invention relates b0 the practical epplicotion of external hearing devices of a class described in my U. S. Patent No. 911,101, issued to me February 6, 1909. For carrying on an ordinary conversation,

5 when 21 small number of people are near together, it is sofiicient if the receiver is concealed in the clothing or exposeci by laying it in any convenient piece. But in a larger company, where a general conversation is 0 carried on, as around a aiiningtable, in consultotions and the like and where voices.

vary greatly in force, tone, pitch and expression, it is desu'ahlo to place the instrument in the GPBIiiOHliGIISlIY the sounds 5 which are to be transmitted amito free it from any deadening of the vibrations which may be caused by a solid support with which iii-may he in contact.

It is the object of my present invention to provide a stand by which one or more of 20 hold receivers of the class set out in said 6.5 trode chamber 23.

vsuch transmitters may be intercepted and communicated thereto with the greatest freedom, which will amplify thesounds so communicated, and by which any deadening effect of a nonwihratorysupport may be overcome. it is adopted to receive at a proper angle sound. waver-s coming to it from almost any direction find it is espcciallywadcpteii to patent at the best working angle of inclinotion thereof.

The principles oi my invention are illus; trated in the drawings, in which-' c5 Figure 1 shows a perspectii e View of my invention showing two separate hearing devices attached thereto; Pi 2 is o rear View thereof; Fig. 3 is ii vertical section 2 on the line 3 3; Figs. 4: and 5 show Flicfil" M fications of the device.

Further describing my invention with reference to the drawings, 1 in Fig. shows a. body portion preferably of metal, having a depressed part .J aaiapteci to form on ciec- Within sai chamber is secured the button elcctco aio 3 whiie foray By its particular conformation ing the other side of said chamber, and providing the other electrode is the :iinpimigm 4. A closed rcverborotory Ciiiiil'iil 'jl' 5 is formed o the casing 6 securcii to the frame piece 1 with its edges adjacent to the yo riphery thereof.

-7 IS a protecting casing for the rear of the instrument secured thereto by the screw 8,

which takes the bridge 9. The said tranemitter is mounted upon a, support '10 The latter consists of a, sheet of resilient. in. terial of comparatively large size preforahiy of hard rubber, to which should he given amimber of folds so as to reduce the extent thereof, and confine it to moderate dimensions in the form shown in 1 There is a base portion 11, a stamiorii poo tion 12, and a free member 18 The latter is given an upward fold ii at its exiremity,

portion to act freely as a, sounding board.

A similer'efieot may he proiiueerl as shown in Fig. 4 by suspending the device by means of o sorin 18 shown in Fig. 4.

-ihe device shown in 1 is provided with tworsoeivers A mail '3. in oriier ii-h the some may he soitebiy mounted 'bl hers and are pro'rifled with c1 openings corre "end substantially to the externai diameter of the eiec soils chamber. 3n removing the casino; 9 said chamber is placed in the opening elnci when. the is repiocecl the transmitter Wiii i fastened to the support oe thereof cc'iiy indic is secure-(i Within the ciovicc and with the iront p on to the rear. 'Jfhe email ope 3.11 it ill the sooner opposiie aici wanes, (is not into ,1 the iihretory action of the 1pc; transmitter shown U that potent ii shows o carbon button. electrocie having poi which are smell cerboro. globes coco above referred to,

or particles which contact with the diaphragm, the instrument works to best advantage when so inclined that said particles gravitate toward the diaphragm. And the upper walls of sections of this support or sounding board should be so slanted as to give the instrument the proper inclination. It will be seen that the transmitters may be connected by suitable electric Wiring which will be familiar to every one, so as to act in unison, while they may be used separately if desired. In any event the support is completely free to act as a sounding board to receivi and amplify the vibrations which are received and cause them to act with the greatest fullness and effect in modifying the electrical Waves which are transmitted to the receiver. The form of the sounding board adapts it to receive sound Waves from all directions, whereupon they are distributed to all the transmitters. The device shown in Fig. 5 indicates a method of construction by which a large number of trans mitters may be secured together Within a very small compass.

I claim:

1.. A support for audiphone transmitters comprising a base, a vibratory member mounted thereon, and a vibratory plate for carrying the transmitter supported by the vibratory member.

2. A. support for audiphone transmitters COI'IlPIlSlHg a base, a vibratory member mounted thercom, and a plate for carrying the transmitter supported by tllUV'llJl'tttOIY member, such plate having a free edge.

3. A support for audiphone transmitters comprising a base, a vibratory member mounted thereon, and a plate for carrying the transmitter, attached at one edge to the vibratory member and being otherwise free.

1-. A supporting device and sounding board for audiphone transmitters, consisting of a base portion, and a transmitter support on said basd comprising a plurality of resilient plates having angular conm on. With each, other, one oi said pla- 1 her a tree edge and the other beni, secl'irc. to

the base portion.

5. A supporting device are soiminng board of audiplione transmitters, consisting of a base portioin 'cushioning supporting means therefor, and a transmitter sup port on said base comprising a plurality of resilient plates having angular connection with each other-{one of said plates having a free edge and the. other being secured to the base o'rtion.

6. i supportffor a'udiphone transmitters consisting of a sounding board having a suppotting'portion and a plurality of corresponding vibratory portions disposed. in angular relation to each other and the supporting portion.

7. In a sound-transmitting device, in combination, a sounding board comprising two leaves united at their upper edges and each being inclined from the vertical, and an audiphone transmitter mounted on each leaf.

8. A supporting device and sounding board for audiphone transmitters, consisting of a base portion, cushioning supporting mains therefor, and a transmitter support on said base comprising a plurality of resilient plates having angular connection "with each other, one of said plates having a free edge provided with an upwardly turned portion, and the other being secured to the base portion.

In Witness whereof, I have hereunto set my hand, this 7th day of January D. 1911, in the presence of two subscribing Witnesses.

CHARLES E. WILLIAMS. Witnesses:

C. K. CHAMBERLAIN, "A. S. PHILLIPS. 

